US10779922B2 - Pause valve and swivel assemblies for oral irrigator handle - Google Patents

Pause valve and swivel assemblies for oral irrigator handle Download PDF

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US10779922B2
US10779922B2 US15/844,262 US201715844262A US10779922B2 US 10779922 B2 US10779922 B2 US 10779922B2 US 201715844262 A US201715844262 A US 201715844262A US 10779922 B2 US10779922 B2 US 10779922B2
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Prior art keywords
handle
valve
valve body
housing
tip
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US15/844,262
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US20180168785A1 (en
Inventor
Robert Wagner
Kurt Taylor
Christina McClard
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Water Pik Inc
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Water Pik Inc
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Assigned to WATER PIK, INC. reassignment WATER PIK, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAYLOR, KURT, WAGNER, ROBERT, MCCLARD, Christina
Publication of US20180168785A1 publication Critical patent/US20180168785A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/0061—Air and water supply systems; Valves specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/0202—Hand-pieces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/0217—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication having means for manually controlling the supply of two or more fluids, e.g. water and air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/028—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication with intermittent liquid flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/225—Flush valves, i.e. bypass valves for flushing line
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10—Tube connectors; Tube couplings
    • A61M39/1055—Rotating or swivel joints

Definitions

  • the present disclosure relates to health and personal hygiene equipment and more particularly, to oral irrigators.
  • Oral irrigators typically are used to clean a user's teeth and gums by discharging a pressurized fluid stream into a user's oral cavity. The fluid impacts the teeth and gums to remove debris.
  • the oral irrigator includes a fluid supply, such as a reservoir, that is fluidically connected by a hose and pump to an oral irrigator tip, often through a handle.
  • Some oral irrigators include actuators to pause fluid flow through the handle without turning off power to the irrigator. But these often include electrical circuitry within the handle and in close proximity to fluid conduits, which creates a safety hazard. Oral irrigators with such electrical actuators are also expensive to manufacture.
  • a user of an oral irrigator often rotates either the handle or the tip relative to the handle in order to direct the fluid to a desired location as well as to hold the handle in a comfortable position.
  • the hose can become tangled as the user moves the handle to different positions and orientations with respect to the reservoir in a base unit. The tangles can reduce the effective length of the hose and can hinder storage of the handle in the base unit, both of which make the oral irrigator difficult to use.
  • the technology disclosed herein relates to an oral irrigator handle. Fluid flows from a hose through the handle to an attached tip during irrigate mode.
  • the handle includes a pause actuator that engages a flow restrictor to effect a pause mode, which allows a user to interrupt fluid flow to the tip without removing his or her hand from the handle and without turning off power to the oral irrigator.
  • the pause mode is mechanically controlled without electrical components.
  • the handle also includes a swivel assembly fluidically coupled to the hose. The swivel assembly minimizes or prevents translation of rotational movement of the handle and the hose relative to the other.
  • the handle includes a housing, a fluid inlet into the housing, a fluid outlet from the housing, and a pause valve assembly positioned between the fluid inlet and the fluid outlet and capable of interrupting fluid flow through the handle. Fluid can flow into the housing through a hose and out of the housing through an attached tip.
  • the pause valve assembly can include a shuttle valve, which is received in a valve housing, and a pause actuator.
  • the shuttle valve is coupled to the pause actuator by a retaining ring and selective movement of the actuator is translated to the shuttle valve.
  • the shuttle valve can be positioned to restrict the flow of fluid through the pause valve assembly when the pause mode is selected with the pause actuator.
  • the shuttle valve does not block fluid flow through the handle when the irrigate mode is selected with the pause actuator.
  • One embodiment includes a handle with a pause switch assembly connected to the handle.
  • the pause switch assembly includes an actuator slidably connected to the handle and movable between a first position and a second position, and a shuttle valve operably connected to the actuator and positioned between the handle inlet and the handle outlet.
  • movement of the actuator from the first position to the second position slides the shuttle valve from an irrigate position to a paused position and, in the paused position, the shuttle valve prevents fluid entering an inlet of the handle from reaching an outlet of the handle.
  • the handle includes a housing in fluid communication with a fluid source.
  • the housing may have a housing inlet and a housing outlet, a tip removably connected to the housing and in fluid communication with the housing inlet, and a pause control connected to the housing and configured to selectively interrupt fluid flow from the handle outlet to the handle inlet.
  • the pause control includes a switch movable along a longitudinal axis of the housing between a first position and a second position and a shuttle valve connected to the switch. Movement of the switch from the first position to the second position slides the shuttle valve from an open position to a closed position. In the open position the fluid flows uninterrupted from the handle inlet to the tip and in the closed position the fluid flow is blocked between the handle inlet and the tip.
  • a handle for an oral irrigator includes a swivel assembly received within the housing and fluidically coupled to the tip, and a hose connected to and fluidically coupled to the swivel assembly.
  • the swivel assembly minimizes or prevents translation of rotational movement of the handle or the hose relative to the other.
  • FIG. 1 is a front right isometric view of an oral irrigator, including a handle, in pause mode, for an oral irrigator connected to a hose connectable to a base unit.
  • FIG. 2A is a front elevation view of the handle of FIG. 1 .
  • FIG. 2B is a right elevation view of the handle of FIG. 1 .
  • FIG. 3 is an exploded view of the handle of FIG. 1 .
  • FIG. 4 is an elevation view in cross section of one embodiment of the handle of FIG. 1 along line 4 - 4 in FIG. 1 .
  • FIG. 5A is an elevation view in cross section of the handle of FIG. 1 along line 5 - 5 in FIG. 1 .
  • FIG. 5B is an elevation view in cross section of the handle of FIG. 1 along line 5 - 5 in FIG. 1 , in irrigate mode.
  • FIG. 6A is a rear isometric view of a first shell of the handle of FIG. 4 .
  • FIG. 6B is a front isometric view of a second shell of the handle of FIG. 4 .
  • FIG. 7A is a front isometric view of a tip eject mechanism of the handle of FIG. 4 .
  • FIG. 7B is a rear top isometric view of a latch of the tip eject mechanism of FIG. 7A .
  • FIG. 8A is a front top isometric view of a backflow valve housing of the handle of FIG. 4 .
  • FIG. 8B is a rear bottom left isometric view of the backflow valve housing of FIG. 8A .
  • FIG. 9A is a right isometric view of a pause valve assembly of the handle of FIG. 4 .
  • FIG. 9B is a rear isometric view of the pause valve assembly of FIG. 9A .
  • FIG. 10 is a right rear isometric view of a portion of the pause valve assembly of FIG. 9A .
  • FIG. 11A is a front left isometric view of an upper valve body of the pause valve assembly of FIG. 9A .
  • FIG. 11B is a front top isometric view of the upper valve body of FIG. 11A .
  • FIG. 11C is a bottom right isometric view of the upper valve body of FIG. 11A .
  • FIG. 12A is front top isometric view of a lower valve body of the pause valve assembly of FIG. 9A .
  • FIG. 12B is a front bottom isometric view of a lower valve body of the pause valve assembly of FIG. 9A .
  • FIG. 13 is a front top isometric view of a shuttle retainer of the pause valve assembly of FIG. 9A .
  • FIG. 14 is a front isometric view of a shuttle valve of the pause valve assembly of FIG. 9A .
  • FIG. 15 is a front top isometric view of a poppet assembly of the pause valve assembly of FIG. 9A .
  • FIG. 16 is a front top isometric view of a retaining ring of the pause valve assembly of FIG. 9A .
  • FIG. 17 is a front isometric view of a valve base of the handle of FIG. 4 .
  • FIG. 18 is an elevation view in cross section of another embodiment of a handle.
  • FIG. 19 is an elevation view in cross section of the handle of FIG. 18 .
  • FIG. 20A is a rear isometric view of a first shell of the handle of FIG. 18 .
  • FIG. 20B is a front isometric view of a second shell of the handle of FIG. 18 .
  • FIG. 21 is a right rear isometric view of a pause valve assembly of the handle of FIG. 18 .
  • FIG. 22A is a front isometric view of an upper valve body of the pause valve assembly of FIG. 21 .
  • FIG. 22B is a front top isometric view of the upper valve body of FIG. 22A .
  • FIG. 22C is a bottom right isometric view of the upper valve body of FIG. 22A .
  • FIG. 23A is front top isometric view of a lower valve body of the pause valve assembly of FIG. 21 .
  • FIG. 23B is a front bottom isometric view of a lower valve body of the handle of FIG. 21 .
  • FIG. 24 is a front top isometric view of a shuttle retainer of the pause valve assembly of FIG. 21 .
  • FIG. 25 is a front isometric view of a shuttle valve of the pause valve assembly of FIG. 21 .
  • FIG. 26 is a front top isometric view of a poppet assembly of the pause valve assembly of FIG. 21 .
  • FIG. 27 is a front isometric view of a valve base of the handle of FIG. 18 .
  • FIG. 28 is a left side elevation view in cross section of another embodiment of a handle.
  • FIG. 29 is a front elevation view in cross section of the handle of FIG. 28 .
  • FIG. 30A is a rear elevation view of an interior of a first shell of the handle of FIG. 28 .
  • FIG. 30B is a front elevation view of an interior of a second shell of the handle of FIG. 28 .
  • FIG. 31 is a right rear isometric view of a pause valve assembly of the handle of FIG. 28 .
  • FIG. 32 is a rear isometric view of the first shell of the handle of FIG. 28 and a portion of the pause valve assembly of FIG. 31 .
  • FIG. 33 is top front isometric view of a lower valve body of the pause valve assembly of FIG. 31 .
  • FIG. 34 is an isometric view of a shuttle valve of the pause valve assembly of FIG. 31 .
  • FIG. 35 is an isometric view of a retaining clip of the pause valve assembly of FIG. 31 .
  • FIG. 36A is front top isometric view of an integrated valve base of the handle of FIG. 28 .
  • FIG. 36B is front bottom isometric view of the integrated valve base of FIG. 36A .
  • An oral irrigator handle through which fluid flow can be interrupted is disclosed herein.
  • fluid flows from a hose into valve components within the handle housing, and out a fluidically connected tip.
  • Fluid flow is interrupted in a pause mode by a mechanically controlled flow restriction valve that is safe and convenient for the user.
  • Fluid flow may be controlled by a pause valve assembly.
  • manually operating a pause actuator of a pause valve assembly slides a shuttle valve, via a coupled retaining ring, to a position atop a poppet support assembly that blocks fluid flow through the handle.
  • An oral irrigator handle having a swivel assembly is also disclosed herein.
  • the swivel assembly is positioned within the handle housing and allows the hose to rotate 360 degrees relative to the handle, such that as a user moves the handle in various directions and/or rotates the handle, the handle can spin with respect to the hose, reducing the chance that the hose will get tangled, bent, or pinched.
  • FIG. 1 illustrates an isometric view of an oral irrigator including a handle with each of a pause valve assembly and a swivel assembly.
  • FIGS. 2A and 2B are elevation views of the handle of FIG. 1 .
  • the oral irrigator 10 may include a handle 100 , a reservoir 12 , a base 14 , and a hose 108 , all of which may be interconnected together.
  • the base 14 may include a pump 16 fluidically connected to the reservoir 12 that pumps fluid from the reservoir 12 to a tip 104 .
  • a control 18 is coupled to the base 14 and configured to vary a flow rate or a fluid pressure produced by the pump 16 , and/or may activate a particular mode, e.g., a cleaning mode, produced by the pump 16 .
  • the base 14 and pump 16 may be similar to the base and pump illustrated in U.S. Publication No. 2015/0004559 entitled “Oral Irrigator with Integrated Lid and Base,” filed on Mar. 13, 2014, which is incorporated herein by reference in its entirety.
  • the handle may enclose the pump and other components and connect directly to the reservoir.
  • the handle may form a main housing for the device.
  • the handle 100 is fluidically connected to the pump 16 and a fluid source, such as the reservoir 12 , by the hose 108 .
  • the handle 100 may generally include a housing 102 , a handle collar 118 , a tip 104 , a tip eject mechanism 141 , a backflow valve body 124 , a pause valve assembly 142 , and a swivel assembly 143 , each of which are discussed in turn below.
  • the hose 108 fluidically connects the handle 100 to the reservoir 12 .
  • the hose 108 may be omitted or may be varied as the reservoir 12 may be directly connected to the handles as shown in U.S. Publication No. 2008/0008979, entitled “Oral Irrigator,” filed on Jul. 7, 2006 and incorporated by reference herein in its entirety.
  • the handle 100 is also fluidically connected to a removable tip 104 , which is configured to be inserted into a user's mouth and to expel fluid against a user's teeth, gums, tongue, etc.
  • the tip 104 may be inserted into the handle 100 through a handle collar 118 .
  • a tip eject button 110 can selectively release the tip 104 from the handle 100 .
  • Liquid from the fluid source can be expelled through a tip outlet 105 in the tip 104 when the tip 104 is connected to the handle 100 .
  • the tip outlet 105 portion of the tip 104 may be shaped as a nozzle or may include a nozzle or other attachment connected thereto.
  • the handle 100 may include a pause actuator 112 .
  • the pause actuator 112 can selectively interrupt the flow of liquid from the fluid source to the tip 104 .
  • the handle housing 102 may be an integrated component or, as shown in FIGS. 2A-5A , may include a first shell 114 and a second shell 116 coupled together (e.g., through ultrasonic welding, fasteners, adhesive, or the like).
  • Each of the first and second shells 114 , 116 may be constructed of a rigid material that resists deformation, such as a hard plastic, but it should be noted that various other materials may be used as well.
  • the handle housing 102 may include an aesthetically pleasing shape that may conform to a user's hand and may include one or more gripping elements.
  • each of the first and second shells 114 , 116 may be comprised of a neck 180 a , 180 b and shell body 192 a , 192 b .
  • the bodies 192 a , 192 b of the first and second shells 114 , 116 together define a handle cavity 172 in which components of the handle 100 , such as the tip eject mechanism 141 , pause valve assembly 142 , swivel assembly 143 , and a portion of the hose 108 , may reside.
  • the first shell 114 may include first, second, third, fourth, seventh, eighth, and ninth ledges 150 a , 152 a , 154 a , 156 a , 162 a , 164 a , and 166 , respectively, for aligning, receiving, retaining, and/or supporting the tip eject mechanism 141 , valve assembly 142 , swivel assembly 143 , hose 108 , or other components of the handle 100 within the handle cavity 172 (see FIGS. 5A and 5B ).
  • the ledges 150 a , 152 a , 154 a , 156 a , 162 a , 164 a , and 166 generally extend in a horizontal plane with respect to a longitudinal axis of the handle 100 , and radially inwardly from an interior wall 174 a of the first shell 114 within the handle cavity 172 .
  • the second shell 116 may include first, second, third, fourth, fifth, sixth, seventh, eighth, and tenth ledges 150 b , 152 b , 154 b , 156 b , 158 , 160 , 162 b , 164 b , and 168 , respectively, for aligning, receiving, retaining, and/or supporting the tip eject mechanism 141 , valve assembly 142 , swivel assembly 143 , hose 108 , or other components of the handle 100 within the handle cavity 172 (see FIGS. 4, 5A, and 5B ).
  • the ledges 150 b , 152 b , 154 b , 156 b , 158 , 160 , 162 b , 164 b , and 168 of the second shell 116 generally extend in a horizontal plane with respect to the longitudinal axis of the handle 100 , and radially inwardly from an interior wall 174 b of the second shell 116 within the handle cavity 172 .
  • Some ledges 150 a , 152 a , 154 a , 156 a , 162 a , 164 a of the first shell 114 may align with a mating ledge 150 b , 152 b , 154 b , 156 b , 162 b , 164 b , respectively, of the second shell 116 when the handle 100 is assembled.
  • the depth of the ledges 150 a , 150 b , 152 a , 152 b , 154 a , 154 b , 156 a , 156 b , 158 , 160 , 162 a , 162 b , 164 a , 164 b , 166 , and 168 may be the same or different, and the depth of a given shelf may vary along the width (the lateral dimension) of that shelf.
  • Some of the ledges 150 a , 150 b , 152 a , 152 b , 154 b , 156 b , 158 , 160 , 162 a , 162 b , 164 a , 164 b , and 166 may be shaped as arcs.
  • mating ledges 150 a , 150 b , 152 a , 152 b , 162 a , 162 b , 164 a , 164 b may align to form generally circular apertures for receiving portions of components such as the pause valve assembly 142 .
  • the bodies 192 a , 192 b of the first and second shells 114 , 116 may also include a plurality of vertical support walls 148 a , 148 b for supporting the ledges 150 a , 150 b , 152 a , 152 b , 154 a , 154 b , 156 a , 156 b , 158 , 160 , 162 a , 162 b , 164 a , 164 b , 166 , and 168 .
  • the vertical support walls 148 a , 148 b may also help to align, receive, retain, and/or support the tip eject mechanism 141 , the valve assembly 142 , the swivel assembly 143 , the hose 108 , or other components of the handle 100 within the handle cavity 172 .
  • the vertical support walls 148 a , 148 b may be as deep as the ledges 150 a , 150 b , 152 a , 152 b , 154 a , 154 b , 156 a , 156 b , 158 , 160 , 162 a , 162 b , 164 a , 164 b , 166 , and 168 they abut, or may be less deep.
  • one or more pegs 169 may extend from the interior wall 174 of one of the shells 114 , 116 (e.g., in the depicted embodiment, the first shell 114 ) proximate the first and ninth ledges 152 a , 166 , respectively, and between the fourth and seventh ledges 156 a , 162 a , respectively, adjacent a vertical support wall 148 a .
  • Each peg 169 may extend into the handle cavity 172 beyond a plane defined by a circumferential edge of the exterior wall 184 b of the second shell 116 .
  • Each peg 169 may be adapted to mate with a corresponding boss defining holes 170 proximate the first, sixth, and tenth ledges 150 b , 160 , and 168 , respectively, of the opposing shell 114 , 116 (e.g., in the depicted embodiment, the second shell 116 ).
  • the pegs 169 and the holes 170 may be dimensioned such that each peg 169 will relatively snugly fit within its corresponding hole 170 . The friction resulting from this fit may resist decoupling of the shells 114 , 116 .
  • the first and second shells 114 , 116 may be joined using glue, epoxy, fasteners, sonic welding, any other known method for joining two items, or by a combination of known methods.
  • the outer surface of the exterior walls 184 a , 184 b of the first and second shells 114 , 116 may each define a C-shaped depression 186 a , 186 b with respective upper surfaces 188 a , 188 b and lower surfaces 190 a , 190 b .
  • opposing depressions 186 a , 186 b define a pocket 186 surrounding an opening 194 .
  • the first shell 114 may also include a pause actuator aperture 204 for receiving a pause actuator 112 and a recessed pause actuator frame 390 .
  • the pause actuator aperture 204 may have an upper portion 392 and a lower portion 394 .
  • both the pause actuator aperture 204 and the pause actuator frame 390 are oval-shaped, but may be any shape.
  • the body 192 a , 192 b of each of the first and second shell 114 , 116 may terminate in a semicircular hose cut-out 144 a , 144 b .
  • the cut-outs 144 a , 144 b together define a substantially circular aperture 146 through which the hose 108 passes.
  • the neck 180 a , 180 b of each of the first and second shell 114 , 116 includes an interior wall 176 a , 176 b and an exterior wall 178 a , 178 b .
  • the interior and exterior walls 176 a , 176 b , 178 a , 178 b may be generally semicylindrical in shape such that when the first and second shells 114 , 116 are assembled to form the housing 102 , the interior and exterior walls 176 a , 176 b , 178 a , 178 b form generally concentric cylinders with an annular recess 177 a , 177 b defined therebetween for receiving a spring 216 .
  • the exterior walls 178 a , 178 b may be continuous or may have one or more interruptions or gaps 206 near the midpoint of the width of each of the first and second shell 114 , 116 .
  • the exterior walls 178 a , 178 b may include a lip 208 a , 208 b and the interior walls 176 a , 176 b may extend beyond the plane of the lips 208 a , 208 b .
  • the interior walls 176 a , 176 b define a cylindrical tip cavity 182 configured to receive a tip 104 .
  • the handle 100 may include a generally circular handle collar 118 .
  • the interior surface may be ribbed and may define a tip-receiving aperture 210 for receiving the tip 104 .
  • the diameter of the internal surface may be the same as the internal diameter of the interior walls of the neck 180 a , 180 b .
  • the spring 216 may be positioned in or under the handle collar 118 , such as by being inserted into an annular well 218 defined in the handle collar 118 or molded into the handle collar 118 (see FIG. 4 ).
  • the tip eject mechanism 141 aids in the insertion and removal of a tip 104 .
  • the tip eject mechanism 141 is substantially similar to the tip eject mechanism described in U.S. patent application Ser. No. 14/555,339, which is incorporated by reference in its entirety herein.
  • the tip eject mechanism 141 or tip release assembly comprises a cylindrical valve cap 122 , a latch 121 , and a tip eject button 110 .
  • the tip eject button 110 is configured to mechanically initiate the release of a tip 104 from the handle 100 , such as by sliding the button 110 upward toward the tip outlet 105 .
  • the tip eject button 110 may be formed with an exterior slider portion 196 and an interior slider portion 200 that are separated from each other by a neck 202 .
  • the exterior slider portion 196 may be substantially obround in shape and may include a tab grip 198 , which may help a user's fingers or hand to more easily operate the tip eject button 110 and prevent the user's finger or hand from slipping off the tip eject button 110 .
  • An upper end of the interior slider portion 200 may include a nose 201 that projects radially inward therefrom.
  • the exterior slider portion 196 may be approximately the same length as the interior slider portion 200 , as in the embodiment depicted in FIGS. 7A and 7B , or may be shorter than or longer than the interior slider portion 200 .
  • the lateral and longitudinal dimensions of the neck 202 are smaller than the related dimensions of the exterior and interior slider portions 196 , 200 such that a circumferential channel is formed between the exterior and interior slider portions 196 , 200 about the neck 202 .
  • the valve cap 122 may receive at least a portion of a tip 104 and help provide a secure connection between the tip and the handle 100 .
  • the valve cap 122 may include a body 226 having an upper end 223 and a lower end 224 , and a circumferential rim 220 near the lower end 224 .
  • the interior of the valve cap 122 may define a tip cavity 222 for receiving a tip 104 .
  • the latch 121 is configured to releasably engage a tip 104 to both secure it to the handle 100 and aid in removing the tip 104 from the handle 100 .
  • the latch 121 may comprise a latch body 452 to which spring legs 454 are attached via a neck 456 .
  • the spring legs 454 extend laterally apart from each other on opposing sides of the neck 456 along a side of the latch body 452 opposite the tip eject button 110 .
  • the neck 456 separates the spring legs 454 from the latch body 452 such that a gap 458 is formed between each of the spring legs 454 and the latch body 452 .
  • each spring leg 454 may terminate in a foot 462 .
  • the outer surface of each foot 462 may have a bulbous projection 464 outward along the width.
  • Each spring leg 454 may be flexible, deformable, and/or resilient such that it returns to its original shape and configuration after being compressed.
  • a top surface 466 of the latch body 452 comprises ledges 468 that are laterally opposed to each other and which extend radially outward and partially around the perimeter of the latch body 452 on the sides between the spring legs 454 and the tip eject button 110 .
  • the ledges 468 extend laterally away from the latch body 452 and have a width sufficient to interface with flat surfaces of the housing 100 and thereby prevent rotation of the latch body 452 .
  • the latch body 452 also comprises an interior lip 470 that extends generally radially inward above an interior wall 472 .
  • the interior lip 470 may be chamfered, as depicted in FIGS. 7A and 7B , or may be smooth and may define a tip-receiving aperture 474 for receiving the tip 104 .
  • the perimeter defined by the interior lip 470 may be an irregular oval or bell shape, as depicted in FIGS. 7A and 7B , or may be any other shape. The shape of the perimeter may be complementary to the tip 104 that is received in the tip-receiving aperture 474 .
  • a locking edge 475 of the interior lip 470 may be positioned adjacent to the spring legs 454 . The locking edge 475 may extend radially outward beyond the surface of the interior wall 472 in order to engage a corresponding groove formed within a tip 104 and thereby retain the tip 104 within the latch body 452 .
  • the interior walls 472 of the latch body 452 may define a valve cap cavity 476 , which is configured to receive the upper end 223 of the body 226 of the valve cap 122 .
  • a cross-sectional area of the valve cap cavity 476 may thus be greater than a cross-sectional area of the tip-receiving aperture 474 .
  • the valve cap cavity 476 may be substantially obround in shape and thus oblong as compared to the circular shape of the body 226 of the valve cap 122 .
  • the latch body 452 also includes a chamfered wall 478 on the outside sidewall opposite the neck 456 and spring legs 454 .
  • the chamfered wall 478 may include an opening between two chamfered legs or it may be solid.
  • the handle 100 may include a backflow valve body 124 for enclosing or supporting a reed valve (not shown).
  • the backflow valve body 124 may include a generally cylindrical top end 230 and a bottom end 232 separated by a generally cylindrical neck 234 and an annular rim 236 .
  • the external diameter of the top end 230 may be approximately the same as the external diameter of the rim 236 , and both diameters may be greater than the external diameter of the bottom end 238 , which in turn may be greater than the external diameter of the neck 234 .
  • a sealing member 120 a such as an O-ring, may be received in the neck 234 .
  • the interior of the backflow valve body 124 may define a valve cavity 246 having an upper portion 248 and a lower portion 249 .
  • a sealing member 120 b such as a U-cup, may be received in an upper portion 248 of the valve cavity 246 above and adjacent to a ledge 250 positioned about midway along the height of the top end 230 of the backflow valve body 124 .
  • the bottom end 232 of the backflow valve body 124 includes a bottom edge 238 that includes a keyed feature 240 .
  • the bottom edge 238 also includes a flap support 242 for supporting or securing an optional reed valve (not shown).
  • the flap support 242 may be formed as a generally circular ring having a diameter narrower than the upper portion 248 of the valve cavity 246 and may be connected to the bottom edge 238 via a bridge 244 .
  • the flap support 242 may be angled such that only a portion, for example the portion adjacent to the bridge 244 , is in the same plane as the bottom edge 238 of the bottom end 232 of the backflow valve body 124 and the remainder of the flap support 242 is angled inward and upward toward the valve cavity 246 such that it does not reach the plane of the bottom edge 238 .
  • the pause valve assembly 142 allows a user to interrupt fluid flow to the tip 104 without removing his or her hand from the handle 100 and without turning off power to the oral irrigator 10 .
  • the pause valve assembly 142 may include an upper valve body 126 , a lower valve body 128 , a shuttle valve 134 received within the upper and lower valve bodies 126 , 128 , a shuttle retainer 130 and a poppet assembly 136 (e.g., a valve seal or sealing assembly), both received within the lower valve body 128 , and a pause actuator 112 operably connected to the shuttle valve 134 by a retaining ring 132 such that selective movement of the actuator 112 also moves the shuttle valve 134 within the upper and lower valve bodies 126 , 128 .
  • the various components of the pause valve assembly 142 will now be discussed in more detail.
  • the upper valve body 126 fluidically connects the chamber 124 and the lower valve body 128 .
  • the upper valve body 126 may include a head 256 and a base 258 connected by a neck 260 .
  • Each of the head 256 , base 258 , and neck 260 may be generally cylindrical and define a valve cavity 262 therethrough.
  • the head 256 may include an upper portion 264 and a lower portion 266 , and the lower portion 266 may define a chord segment 268 that interrupts the outer cylindrical surface of the lower portion 266 .
  • the external diameter of the upper portion 264 may be slightly greater than the external diameter of the lower portion 266 .
  • the external diameters of the both the upper and lower portions 264 , 266 of the head 256 may be generally greater than the external diameter of the base 258 , which in turn may be greater than the external diameter of the neck 260 .
  • One or more, such as two, arms 270 may extend laterally from the head 256 near the interface between the head upper and lower portions 264 , 266 .
  • the arms 270 are positioned to engage and act as a track for the pause actuator 112 to move along.
  • two arms 270 may be positioned approximately 180 degrees apart from each other on the head 256 .
  • the arms 270 may be obround in cross-sectional shape as shown in FIG. 11A or may be other shapes.
  • the portion of the valve cavity 262 adjacent to the lower portion 266 of the head 256 may include a floor 272 and a shelf 274 .
  • a flow aperture 276 may be defined in the floor 272 and the flow aperture 276 may have a diameter less than the diameter of any of the head 256 , neck 260 , and base 258 .
  • the shelf 274 may include a keyed feature 278 positioned corresponding to the chord segment 268 of the lower portion 266 of the head 256 .
  • a shelf wall 280 may extend below a bottom surface 282 of the floor 272 of the head 256 near the interface between the base 258 and neck 260 to define a narrowed diameter portion of the valve cavity 262 .
  • a sealing member 120 c such as U-cup, may be positioned on the shelf wall 280 .
  • a lower valve body 128 operably connects the upper valve body 126 and the valve base 138 .
  • the lower valve body 128 may include two or more arms 400 connecting an upper plate 402 and a lower plate 404 , a lip 406 defined on top of the upper plate 402 , and a skirt 408 positioned below the lower plate 404 .
  • two cuboidal arms 400 are present and they are positioned opposite from each other across each of the upper and lower plates 402 , 404 .
  • Each of the lip 406 , upper plate 402 , and lower plate 406 may be ring-shaped such that they define respective circular openings 410 .
  • the skirt 408 may be cylindrical in shape with a skirt cavity 412 defined therethrough.
  • the skirt 408 may include an outer skirt wall 414 and an inner skirt wall 416 .
  • the inner skirt wall 416 may define the skirt cavity 412 and may include one or more tracks 418 formed as grooves or threading.
  • a track 418 may extend approximately 360° around the interior skirt wall 416 in an uneven plane such that the ends of the track 418 do not meet but rather are offset from each other along a longitudinal axis of the handle 100 .
  • the external diameter of the upper plate 402 may be approximately equal to the external diameter of the lower plate 404 , and both diameters may be greater than the external diameter of the lip 406 but less than the external diameter of the skirt 408 .
  • a sealing member 120 d such as a U-cup, may be positioned within the skirt 408 under the lower plate 404 .
  • a shuttle retainer 130 receives fluid flowing past the poppet assembly 136 when the handle 100 is in pause mode.
  • the shuttle retainer 130 may be generally cylindrical with an open first end 290 and open second end 292 .
  • the shuttle retainer 130 may include an exterior wall 294 and a stepped interior wall 296 defining a cavity 298 that extends between the open first and second ends 290 , 292 .
  • the open first end 290 may include a top surface 300 having a plurality of tabs 302 separated by notches around the perimeter 304 of the opening 306 .
  • the tabs 302 may define a broken circular edge with a circumference slightly larger than the circumference of the shuttle valve 134 .
  • the shuttle valve 134 interrupts fluid flow through the handle 100 when pause mode is selected.
  • the shuttle valve 134 may include a cylindrical body 332 and a frustum-shaped base 334 .
  • the body 332 may be interrupted by a connector groove 336 positioned about midway along the length of the body 332 .
  • the external diameter of the base 334 may be greater than the external diameter of the body 332 , which may in turn be greater than the external diameter of the connector groove 336 .
  • the shuttle valve 134 may also include a flow lumen 342 defined within the body 332 and a base cavity 348 defined within the base 334 .
  • An open first end 338 of the shuttle valve 134 is fluidically connected to an open second end 340 by the flow lumen 342 and the base cavity 348 .
  • the body 332 of the shuttle valve 134 may include a top surface 344 and the base 334 may include a bottom surface 346 .
  • a poppet assembly 136 is used to selectively disconnect fluid flow from the hose 108 to the valve cap 122 .
  • the poppet assembly 136 may include a generally circular cap 312 connected to a poppet support plate 316 by a cylindrical poppet neck 318 .
  • An annular platform 314 may encircle the neck 318 above the poppet support plate 316 .
  • the diameter of the platform 314 may be approximately equal to the diameter of the cap 312 and less than the widest diameter of the poppet support plate 316 .
  • the poppet support plate 316 includes a first surface 320 , a second surface 322 , and a plurality of sprockets 324 extending outwardly from the platform 314 . Two adjacent sprockets 324 may be separated from each other to define a flow path 326 therebetween. A sealing member 120 e may be seated around the poppet neck 318 between the cap 312 and platform 314 .
  • a retaining ring 132 operably connects the pause actuator 112 to the shuttle valve 134 .
  • the retaining ring 132 may be disc-shaped and may include a keyhole cutout 354 , which may include a plurality of forms.
  • the retaining ring may have a first slot 356 a , a center aperture 356 b , and a hinge aperture 356 c .
  • the center aperture 356 b in the keyhole cutout 354 may be sized to fit around the connector groove 336 of the shuttle valve 134 .
  • the retaining ring 132 may be a snap ring.
  • the pause actuator 112 is moved by a user to place the handle in a pause or an irrigate mode.
  • the pause actuator 112 may include an exterior slider plate 362 and an interior slider plate 364 .
  • the exterior slider plate 362 may include a grip portion 366 for aiding a user in gripping and moving the pause actuator 112 .
  • the interior slider plate 364 may have a concave shape and may include a concave or rear face 368 from which one or more walls 370 extend. For example, two walls 370 that are generally rectangular cuboids in shape are shown in FIG. 10 .
  • An upper shelf 372 and a lower shelf 374 may also extend parallel to each other from the rear face 368 .
  • a first upper prong 376 a and a second upper prong 376 b may extend from the upper shelf 372 away from the rear face 368 .
  • a first lower prong 378 a and a second lower prong 378 b may similarly extend from the lower shelf 374 .
  • the first prongs 376 a , 378 a are laterally spaced from the second prongs 376 b , 378 b and are connected by a shelf wall 380 that forms a semicircle from the terminus 382 a of one prong 376 a , 378 a to the terminus 382 b of the laterally opposed prong 376 b , 378 b .
  • Each upper prong 376 a , 376 b may be separated from its proximal lower prong 378 a , 378 b by a retaining gap 384 between the upper and lower shelves 372 , 374 .
  • the prongs 376 a , 376 b , 378 a , 378 b may be any shape.
  • the swivel assembly 143 may help minimize or prevent translation of rotational movement of the handle 100 or the hose 108 relative to the other.
  • the swivel assembly 143 may include a valve base 138 and a bushing 140 .
  • the valve base 138 is configured to be received within the stationary lower valve body 128 .
  • the valve base 138 may include an annular protruding rim 424 , a cylindrical body 426 , and an elongated barbed tip 428 .
  • the valve base 138 defines a flow cavity 430 from the barbed tip 428 through to the top surface 432 of the rim 424 .
  • the rim 424 may include one or more threads 434 .
  • Each thread 434 may extend approximately 360° around the rim 424 in an uneven plane such that the ends of the thread 434 do not meet but rather are offset from each other along a longitudinal axis of the handle 100 .
  • the threads 434 which may be complimentary to the tracks 418 of the inner skirt wall 416 of the skirt 408 of the lower valve body 128 , may help to align or assemble the valve base 138 and lower valve body 128 .
  • the barbed tip 428 may include one or more gripping components 436 that enhance the connection between the valve base 138 and the hose 108 .
  • the swivel assembly 143 may also include a cylindrical bushing 140 defining a barb aperture 442 configured to receive the barbed tip 428 of the valve base 138 .
  • the bushing 140 may include a rim 444 and a body 446 .
  • FIGS. 3-5B and 7A-17 An illustrative example of assembly of the handle 100 will now be discussed. It should be noted that the below description is meant as exemplary only and the handle 100 may be assembled in any manner and in any order. In one embodiment, the handle components of FIGS. 3-5B and 7A-17 may be assembled within the housing 102 as follows.
  • the upper end 223 of the body 226 of the valve cap 122 may be received in the valve cap cavity 476 of the latch 121 .
  • the perimeter of the interior lip 470 may directly align with or may be slightly offset from the tip cavity 222 of the valve cap 122 .
  • the upper end 223 of the body 226 of the valve cap 122 may not completely fill the volume of the valve cap cavity 122 such that lateral movement of the latch 121 toward or away from the tip eject button 110 is permitted.
  • the nose 201 of the interior slider portion 200 of the tip eject button 110 may abut and interface with the chamfered wall 478 of the latch 121 .
  • the top surface 466 of the latch 121 may be below and adjacent to the first ledge 150 a , 150 b , and the bottom of the latch body 452 may be adjacent to or rest upon the second ledge 152 a , 152 b.
  • the exterior slider portion 196 of the tip eject button 110 When the housing is assembled, the exterior slider portion 196 of the tip eject button 110 may be positioned within the pocket 186 of the housing 102 , the neck 202 may be received within the opening 194 within the pocket 186 , and the interior slider portion 200 may be positioned against an interior wall 174 of the housing 102 opposite from the pocket 186 .
  • the upper surface 188 and lower surface 190 of the pocket 186 may extend beyond the length of the tip eject button 110 such that the pocket 186 is longer than the exterior and interior slider portions 196 , 200 and the neck 202 is shorter than a longitudinal dimension of the opening 194 in the pocket 186 .
  • the tip eject button 110 is both retained within the opening 194 in the pocket 186 and can slide longitudinally within the pocket 186 as the exterior and interior slider portions 196 , 200 travel on either side of the upper and lower surfaces 188 , 190 of the pocket 186 .
  • the lip 406 of the lower valve body 128 may be received in the base 258 of the upper valve body 126 and may be positioned below and adjacent to the sealing member 120 c positioned under the shelf wall 280 of the valve cavity 262 .
  • the shuttle retainer 130 may be received in the skirt cavity 412 of the lower valve body 128 .
  • the exterior wall 294 of the shuttle retainer 130 may be positioned adjacent to the inner skirt wall 416 of the lower valve body 128 .
  • the second end 292 of the shuttle retainer 130 may be positioned adjacent to the first surface 320 of the poppet support plate 316 .
  • the top surface 300 of the shuttle retainer 130 may be positioned below and adjacent to the sealing member 120 d positioned under the lower plate 404 of the lower valve body 128 .
  • tabs 302 and notches in the top surface 300 of the shuttle retainer 130 may permit water to reach the sealing member 120 d and press the sealing member 120 d against the shuttle valve 134 and the lower plate 404 more uniformly, thereby creating a faster or stronger seal than in the absence of water.
  • the base 334 and a lower portion of the body 332 of the shuttle valve 134 may be received in the cavity 298 of the shuttle retainer 130 .
  • the first end 338 of the shuttle valve 134 may be received in the valve cavity 262 of the upper valve body 126 .
  • the arms 400 of the upper valve body 126 may flank a portion of the body 332 of the shuttle valve 134 .
  • a shuttle compartment 284 may be formed in the space between the bottom surface 282 of the floor 272 of the head 256 of the upper valve body 126 and the top surface 344 of the body 332 of the shuttle valve 134 when the handle 100 is in pause mode.
  • the retaining ring 132 may be flexed at the hinge aperture 356 c to widen the slot 356 a and seat the center aperture 356 b of the retaining ring 132 within the connector groove 336 of the shuttle valve 134 .
  • the cap 312 and the sealing member 120 e positioned around the poppet neck 318 of the poppet assembly 136 may be received in the base cavity 348 of the shuttle valve 134 .
  • the first surface 320 of the poppet support plate 316 may be positioned below and adjacent to the bottom surface 346 of the base 334 of the shuttle valve 134 and below and adjacent to the second end 292 of the shuttle retainer 130 .
  • the interior slider plate 364 of the pause actuator 112 may extend from approximately the head 256 of the upper valve body 126 to the skirt 408 of the valve lower housing.
  • the walls 370 on the rear face 368 of the interior slider plate 364 may be positioned adjacent to the head 256 of the upper valve body 126 , at least when the pause mode is selected.
  • the shelf wall 380 may face the body 332 of the shuttle valve 134 .
  • the retaining ring 132 may be captured in the gap 384 formed between the upper prongs 376 a , 376 b , and lower prongs 378 a , 378 b .
  • One pair of upper and lower prongs 376 a , 378 a may traverse some or all of the slot 356 a of the keyhole 354 of the retaining ring 132 .
  • Another pair of upper and lower prongs 376 b , 378 b may traverse some or all of the hinge aperture 356 c.
  • the top surface 432 of the protruding rim 424 of the valve base 138 may be positioned below and adjacent to the second surface 322 of the poppet support plate 316 .
  • One or more of the threads 434 of the rim 424 may be mated with the one or more complementary tracks 418 on the interior skirt wall 416 of the lower valve body 128 .
  • the base 258 of the upper valve body 126 When the housing 102 is assembled, the base 258 of the upper valve body 126 is positioned adjacent to and below the fourth ledge 156 a , 156 b .
  • Each arm 270 of the upper valve body 126 may extend perpendicularly to and be positioned between a vertical support wall 148 a of the first shell 114 and a vertical support wall 148 b of the second shell 116 .
  • the upper plate 402 of the lower valve body 128 may be positioned above the fifth ledge 158 and the skirt 408 of the lower valve body 128 may be positioned above and adjacent to the seventh ledge 162 a , 162 b.
  • the exterior slider plate 362 of the pause actuator 112 may be positioned within the pause actuator aperture 204 in the first shell 114 and the interior slider plate 364 may be positioned against an interior wall 174 of the first shell 114 opposite at least a portion of the pause actuator frame 390 .
  • the upper and lower portions of the aperture 204 extend beyond the length of the exterior slider plate 362 such that the aperture 204 is longer than the exterior slider plate 362 and shorter than the interior slider plate 364 .
  • the pause actuator 112 is both retained within the aperture 204 and can slide longitudinally within the aperture 204 as the exterior and interior slider plates 362 , 364 travel on either side of the aperture 204 and frame 390 .
  • the barbed tip 428 of the valve base 138 is received in the barb aperture 442 of the bushing 140 .
  • Eighth ledges 164 a , 164 b of the shells 114 , 116 may be positioned beneath the rim 444 of the bushing 140 .
  • An end of the hose 108 may fit over the barbed tip 428 .
  • the hose 108 may exit the cavity 172 of the assembled housing 102 at the aperture 146 .
  • the lower end 224 of the valve cap 122 may be received in the upper portion 248 of the valve cavity 246 of the backflow valve body 124 .
  • the lower end 224 may be positioned above and adjacent to the sealing member 120 b seated on the ledge 250 of the top end 230 of the backflow valve body 124 .
  • the rim 220 of the valve cap 122 may be captured between the underside of the second ledge 152 a , 152 b of the first and second shells 114 , 116 and the top end 230 of the backflow valve body 124 .
  • the neck 234 , rim 236 , and bottom end 232 of the backflow valve body 124 may be received in the portion of the valve cavity 262 of the upper valve body 126 adjacent to the head 256 .
  • the rim 236 of the backflow valve body 124 may be positioned adjacent to the shelf 274 of the upper valve body 126 such that the keyed feature 240 of the bottom edge 238 of the backflow valve body 124 mates with the keyed feature 278 of the shelf 274 of the upper valve body 126 .
  • the sealing member 120 a seated in the neck 234 of the backflow valve body 124 may be positioned in the valve cavity 262 of the head 256 of the upper valve body 126 .
  • the rim 424 of the valve base 138 is received in the skirt 408 of the lower valve body 128 and is positioned under the poppet support plate 316 .
  • the handle collar 118 may be positioned over the neck 180 a , 180 b and may be secured to the handle housing 102 by several arcuate tabs 212 extending radially inward from a sidewall of the handle collar 118 that capture the lip 208 a , 208 b of the neck 180 a , 180 b (see FIGS. 4, 5A, and 5B ).
  • the arcuate tabs 212 of the handle collar 118 may be separated from the bodies 192 a , 192 b of the first and second shell 114 , 116 by a gap 214 , the span of which may be decreased by depressing the handle collar 118 towards the bodies 192 a , 192 b.
  • FIGS. 18-27 depict another embodiment of a handle 500 .
  • similarly numbered features of the components of the handle 500 have similar designs, constructions, function, and operations as those of the components described above unless otherwise noted.
  • the exterior of the handle 500 may appear the same as or similar to the handle 100 of FIGS. 1, 2A, and 2B .
  • the handle 500 may not include either or both of a backflow valve body 124 and a bushing 140 .
  • the handle 500 of FIGS. 18-27 may include a first shell 514 and a second shell 516 , each comprised of a neck 580 a , 580 b and shell body 592 a , 592 b (see FIGS. 20A and 20B ).
  • the first shell 514 may include first, second, third, fourth, seventh, and eighth ledges 550 a , 552 a , 554 a , 556 a , 562 a , and 564 a , respectively, that are constructed similarly to the previously described ledges 150 a , 152 a , 154 a , 156 a , 162 a , and 164 a , respectively, and also have similar functions.
  • the second shell 516 may include first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth ledges 550 b , 552 b , 554 b , 556 b , 558 , 560 , 562 b , 564 b , and 566 , respectively, that are constructed similarly to the previously described ledges 150 b , 152 b , 154 b , 156 b , 158 , 160 , 162 b , 164 b , and 168 , respectively, and also have similar functions.
  • the bodies 592 a , 592 b of the first and second shells 514 , 516 may also include a plurality of vertical support walls 548 a , 548 b , pegs 569 , and holes 570 similar to the corresponding features of the first-described embodiment.
  • the outer surface of the exterior walls 584 a , 584 b of the first and second shells 514 , 516 may each define a C-shaped depression 586 a , 586 b with respective upper surfaces 588 a , 588 b and lower surfaces 590 a , 590 b similar to the corresponding features described above.
  • opposing depressions 586 a , 586 b define a pocket 586 surrounding an opening 594 .
  • An elongate tip eject button 510 may be formed with an exterior slider portion 596 and an interior slider portion 600 that are separated from each other by a neck 602 .
  • the exterior slider portion 596 may include a tab grip 598 .
  • the interior slider portion 600 may include a nose 601 that projects radially inward therefrom.
  • the design and construction of the tip eject button 510 , and its position relative the first and second shells 514 , 516 may be the same as or similar to the tip eject button 110 of the first-described embodiment.
  • the first shell 514 of the present embodiment may also include a pause actuator aperture 604 for receiving a pause actuator 512 and a recessed pause actuator frame 790 .
  • the pause actuator aperture 604 may have an upper portion 792 and a lower portion 794 .
  • the body 592 a , 592 b of each of the first and second shell 514 , 516 may terminate in a semicircular hose cut-out 544 a , 544 b .
  • the cut-outs 544 a , 544 b together define a substantially circular aperture 546 through which a hose passes.
  • the neck 580 a , 580 b of each of the first and second shell 514 , 516 includes an interior wall 576 a , 576 b , an exterior wall 578 a , 578 b , and an annular recess 577 a , 577 b substantially as described above.
  • the exterior walls 578 a , 578 b may include a lip 608 a , 608 b and the interior walls 576 a , 576 b , when assembled into the handle 500 , define a cylindrical tip cavity 582 configured to receive a tip 104 .
  • the handle 500 may include a handle collar 518 having similar features and functions to the handle collar 118 described above.
  • the handle collar 518 may include a tip-receiving aperture 610 for receiving the tip 104 , an annular well 618 for receiving a spring 616 , and arcuate tabs 612 for securing the collar 518 onto the first and second shells 514 , 516 (see FIG. 18 ).
  • a tip eject mechanism 541 of the handle 500 may be substantially the same in its design and operation as the tip eject mechanism 141 described above.
  • a pause valve assembly 542 of the handle 500 may include an upper valve body 526 , a lower valve body 528 , a shuttle valve 534 , a shuttle retainer 530 , a poppet assembly 536 , and a pause actuator 512 operably connected to the shuttle valve 534 by a retaining ring 532 substantially the same as the pause valve assembly 142 described above with the following exceptions.
  • an upper valve body 526 may be substantially the same as the upper valve body 126 described above.
  • the portion of the valve cavity 662 adjacent to the head 656 may include a floor 672 and a ledge 686 and a shelf 674 positioned between the floor 672 and ledge 686 .
  • One or more arms 670 may extend laterally from the head 656 and neck 660 .
  • the arms 670 may be rectangular cuboids in shape as shown in FIG. 22A-C or may be other shapes.
  • the external diameters of the head 656 and base 658 may be approximately equal and both may be greater than the external diameter of the neck 660 .
  • the head 656 may be shorter, the neck 660 may be longer, and the base 658 may be wider.
  • the head 656 may not include separate upper and lower portions 264 , 266 .
  • the head 656 may not include a chord segment 268 and the shelf 674 may not include a keyed feature 278 .
  • a lower valve body 528 may be substantially the same as the lower valve body 128 described above.
  • the lower valve body 528 includes an annular wall 820 positioned between a lower plate 804 and a skirt 808 .
  • An upper portion 822 of the skirt 808 may angle inward toward the annular wall 820 .
  • the external diameter of the upper plate 802 may be approximately equal to the external diameter of the annual wall 820 , and both diameters may be greater than the external diameter of the lip 806 but less than the external diameter of the skirt 808 .
  • the lip 806 may be taller, the arms 800 may be elongated, and the skirt 808 may be truncated.
  • the inner skirt wall 816 may not include any tracks 418 .
  • a sealing member 520 d such as a U-cup, may be positioned under the lower plate 804 adjacent the annual wall 820 .
  • the sealing member 520 d may be overmolded into the lower plate 804 or the annual wall 820 .
  • a shuttle retainer 530 may include a cylindrical body 707 and a lip 709 that meet at a ledge 708 .
  • the shuttle retainer 530 may include an exterior wall 694 and a stepped interior wall 696 defining a cavity 698 that extends from an open first end 690 to an open second end 692 .
  • the open first end 690 may include a top surface 700 having a plurality of tabs 702 separated by notches around the perimeter 704 of the opening 706 .
  • the tabs 702 may define a broken circular edge with a circumference slightly larger than the circumference of the shuttle valve 534 .
  • the upper portion 710 of the lip may angle inwards towards the tabs 702 and opening 706 .
  • the shuttle valve 534 may have substantially the same features as the shuttle valve 134 descripted above.
  • the body 732 is elongated compared to the body 332 of the shuttle valve 134 depicted in FIG. 14 .
  • the poppet assembly 536 may be substantially the same in its design and operation as the poppet assembly 136 described above.
  • the cap 712 includes a recessed center portion 713
  • the poppet neck 718 is elongated compared to poppet neck 318
  • the platform 714 is taller and its perimeter sits closer to the flow path 726 than the platform 314 .
  • a retaining ring 532 may be substantially the same in its design and operation as the retaining ring 132 described above.
  • a pause actuator 512 may be substantially the same in its design and operation as the pause actuator 112 described above.
  • the interior slider plate 764 may include a lateral tab 765 on each lateral side of the plate 764 adjacent the first and second upper and lower prongs 776 a , 776 b , 778 a , 778 b.
  • a swivel assembly 843 may include a valve base 538 .
  • the swivel assembly 843 may not include a bushing 140 .
  • the valve base 538 may include a series of stacked, concentric, annular discs instead of an annular protruding rim 424 .
  • the top disc 838 may have the smallest diameter of the stack with the middle disc 839 having a diameter between the top disc 838 and the bottom disc 840 .
  • each of the discs 838 , 839 , 840 may increase between each disc, with the top disc 838 having the smallest thickness, the middle disc 839 having a thickness between the two discs 838 , 840 , and the bottom disc 840 having the greatest thickness.
  • the example of FIG. 27 may not include any threads 434 .
  • the handle components of FIGS. 18-27 may be assembled within the housing 502 similarly to how the handle 100 is assembled, except as described below.
  • the assembled components of FIGS. 18-27 of handle 500 may occupy a greater portion of the cavity 572 as measured along a longitudinal axis of the handle 500 .
  • the barbed tip 828 may terminate lower in the cavity 572 than the barbed tip 428 of the first-described handle 100 .
  • the rim 620 of the valve cap 522 may be captured between the underside of the second ledge 552 a , 552 b of the first and second shells 514 , 516 and the top surface of the head 656 of the upper valve body 526 .
  • the lower end 624 of the valve cap 522 may be received in the portion of the valve cavity 662 of the upper valve body 526 adjacent the head 656 .
  • the lower end 624 may be positioned above and adjacent to a sealing member 520 b seated on the shelf 674 of the upper valve body 526 .
  • the arms 670 may extend laterally to a vertical support wall 548 a , 548 b and be positioned adjacent to and under the third ledges 554 a , 554 b.
  • the exterior wall 694 of the shuttle retainer 530 may be positioned adjacent to the inner skirt wall 816 of the lower valve body 528 such that the stepped profile of the exterior wall 694 follows the stepped profile of the inner skirt wall 816 .
  • the top surface 700 of the shuttle retainer 530 may be positioned adjacent to the upper portion 822 of the skirt 808 but may not extend to the annular wall 820 and may not extend to the sealing member 520 d adjacent the annual wall 820 or lower plate 804 .
  • a greater portion of the body 732 of the shuttle valve 534 may be received in the cavity 698 of the shuttle retainer 530 .
  • the shuttle compartment 684 formed in the space between the bottom surface 682 of the floor 672 of the head 656 of the upper valve body 526 and the top surface 744 of the body 732 of the shuttle valve 534 when the handle 500 is in pause mode may be longer than or have a greater volume than the shuttle compartment 284 of the handle 100 .
  • the walls 770 on the rear face 768 of the interior slider plate 764 of the pause actuator 512 may be positioned approximately level with the neck 660 of the upper valve body 526 when pause mode is selected and may be positioned near or adjacent the head 656 when irrigate mode is selected.
  • the top surface 832 of the top disc 838 of the valve base 538 may extend beneath and adjacent to the second surface 722 of the poppet support plate 716 .
  • the middle disc 839 may be positioned adjacent the inner skirt wall 816 .
  • the outer diameter of the bottom disc 840 may be approximately the same as the outer diameter of the skirt 808 of the lower valve body 528 such that when the bottom disc 840 is positioned under the skirt 808 , the outer skirt wall 814 may be flush with the outer surface 841 of the bottom disc 840 .
  • FIGS. 28-36 depict another embodiment of a handle 1000 .
  • similarly numbered features of the components of the handle 1000 have similar designs, constructions, functions, and operations as those of the components described above unless otherwise noted.
  • the exterior of the handle 1000 may appear the same as or similar to the handle 100 of FIGS. 1, 2A, and 2B .
  • the poppet assembly may be integrated into the valve base to form an integrated valve base 1138 .
  • the handle 1000 may include a retaining clip 1130 and not include a shuttle retainer 130 , 530 .
  • the handle 1000 of FIGS. 28-36 may include a first shell 1014 and a second shell 1016 , each comprised of a neck 1080 a , 1080 b and shell body 1092 a , 1092 b (see FIGS. 30A and 30B ).
  • the first shell 1014 may include first, second, third, fourth, fifth, seventh, and eighth ledges 1050 a , 1052 a , 1054 a , 1056 a , 1058 a , 1062 a , and 1064 , respectively, that are constructed similarly to the previously described ledges 150 a , 152 a , 154 a , 156 a , 158 a , 162 a , and 164 a and also have similar functions.
  • the first shell 1014 may also include one or more lateral brackets 1047 affixed to the interior wall 1074 a that may help retain the pause actuator 1012 in the on/irrigate or paused position, as selected.
  • Each lateral bracket 1047 may include a plurality of catches or detents 1049 that help to mechanically releasably capture the pause actuator 1012 .
  • the detents 1049 may be shaped complimentary to a portion of the pause actuator 1012 . In the example depicted in FIG. 32 , the detents 1049 may be semicircular in shape.
  • the second shell 1016 may include first, second, third, fourth, fifth, sixth, and seventh ledges 1050 b , 1052 b , 1054 b , 1056 b , 1058 b , 1060 , and 1062 b , respectively, that are constructed similarly to the previously described ledges 150 b , 152 b , 154 b , 156 b , 158 , 160 , and 162 b and also have similar functions.
  • the second shell 1016 may also include magnet 1051 and a magnet retainer 1045 for securing the magnet 1051 .
  • the magnet 1051 may help connect the handle 1000 to the base unit via a corresponding magnet in the base unit as described in U.S. patent application Ser. No. 15/843,911 entitled “Oral irrigator with magnetic attachment” filed contemporaneously herewith and which is incorporated by reference herein in its entirety.
  • the bodies 1092 a , 1092 b of the first and second shells 1014 , 1016 may also include a plurality of vertical support walls 1048 a , 1048 b , pegs 1069 , and holes 1070 similar to the corresponding features of the first-described embodiment.
  • the outer surface of the exterior walls 1084 a , 1084 b of the first and second shells 1014 , 1016 may each define a C-shaped depression 1086 a , 1086 b with respective upper surfaces 1088 a , 1088 b and lower surfaces 1090 a , 1090 b similar to the corresponding features described above.
  • opposing depressions 1086 a , 1086 b define a pocket 1086 surrounding an opening 1094 .
  • An elongate tip eject button 1010 may be formed with an exterior slider portion 1096 and an interior slider portion 1100 that are separated from each other by a neck 1102 .
  • the exterior slider portion 1096 may include a tab grip 1098 .
  • the interior slider portion 1100 may include a nose 1101 that projects radially inward therefrom.
  • the design and construction of the tip eject button 1010 , and its position relative the first and second shells 1014 , 1016 may be the same as or similar to the tip eject button 110 of the first-described embodiment.
  • the body 1092 a , 1092 b of each of the first and second shell 1014 , 1016 may terminate in a semicircular hose cut-out 1044 a , 1044 b .
  • the cut-outs 1044 a , 1044 b together define a substantially circular aperture through which a hose passes.
  • the neck 1080 a , 1080 b of each of the first and second shells 1014 , 1016 includes an interior wall 1076 a , 1076 b , an exterior wall 1078 a , 1078 b , and an annular recess 1077 a , 1077 b substantially as described above.
  • the exterior walls 1078 a , 1078 b may include a lip 1108 a , 1108 b and the interior walls 1076 a , 1076 b , when assembled into the handle 1000 , define a cylindrical tip cavity 1082 configured to receive a tip 104 .
  • the handle 1000 may include a handle collar 1018 having similar features and functions to the handle collar 118 described above.
  • the handle collar 1018 may include a tip-receiving aperture 1110 for receiving the tip 104 , an annular well 1118 for receiving a spring 1116 , and arcuate tabs 1112 for securing the collar 1018 onto the first and second shells 1014 , 1016 (see FIG. 28 ).
  • a tip eject mechanism 1041 of the handle 1000 may be substantially the same in its design and operation as the tip eject mechanism 141 described above and may include a cylindrical valve cap 1022 , a latch 1021 , and a tip eject button 1010 .
  • a pause valve assembly 1042 of the handle 1000 may include an upper valve body 1026 , a lower valve body 1028 , a shuttle valve 1034 , and a pause actuator 1012 operably connected to the shuttle valve 1034 by a retaining ring 1032 substantially the same as the pause valve assembly 142 , 542 described above with the following exceptions.
  • the pause valve assembly 1042 may include a retaining clip 1130 but not include a shuttle retainer 130 .
  • the pause valve assembly 1042 may include an integrated valve base 1138 having a poppet assembly 1136 connected to an elongated barbed tip 928 .
  • an upper valve body 1026 may be substantially the same as the upper valve body 526 described above for handle 500 .
  • a lower valve body 1028 may be substantially the same as the lower valve body 128 described above.
  • the lower valve body 1028 includes an annular wall 1320 positioned between the lower plate 1304 and the skirt 1308 .
  • the upper portion 1322 of the skirt 1308 may angle inwards towards the annular wall 1320 .
  • the external diameter of the upper plate 1302 may be approximately equal to the external diameter of the lower plate 1304 , and both diameters may be greater than the external diameter of the lip 1306 but less than the external diameter of the annular wall 1320 and the skirt 1308 .
  • the arms 1300 may be elongated, and the lower valve body 1028 may include an annular wall 1320 and an angled upper portion 1322 of the skirt 1308 may be truncated.
  • a sealing member 1120 d such as a U-cup, may be positioned under the lower plate 1304 adjacent the annual wall 1320 .
  • the sealing member 1120 d may be overmolded into the lower plate 1304 or the annual wall 1320 .
  • a pause actuator 1012 may be substantially the same in its design and operation as the pause actuators 112 , 512 described above.
  • the interior slider plate 1264 may include a lateral tab 1265 on each lateral side of the plate 1264 adjacent the first and second upper and lower prongs 1276 a , 1276 b , 1278 a , 1278 b similar to the example depicted in FIG. 21 .
  • Each lateral side of a lower end 1263 of the interior slider plate 1264 may terminate in a foot 1267 that may help the pause actuator 1012 be retained in the on/irrigate or paused position, as selected.
  • Each foot 1267 may be received in a complimentarily shaped detent 1049 of the lateral bracket 1047 affixed to the interior wall 1074 a of the first shell 1014 .
  • Each foot 1267 may include a sloped upper surface 1269 that helps the foot 1267 slide smoothly between detents 1049 as the pause actuator 1012 is moved between the irrigate and pause positions.
  • the interior slider plate 1264 may have a generally concave shape and may include a rear face 1268 that is contoured or molded to form an internal face 1271 of the exterior slider plate 1262 .
  • One or more walls 1270 may extend from the rear face 1268 and may help the pause actuator 1012 maintain a contact with and constant spacing from other components of the pause valve assembly 1042 .
  • two walls 1270 a are shown positioned toward an upper end 1273 of the interior slider plate 1264 and two walls 1270 b are shown positioned toward a lower end 1263 .
  • the upper walls 1270 a may interface with the upper valve body 1026 and the lower walls 1270 b may interface with the lower valve body 1028 .
  • a retaining ring 1032 may be substantially the same in its design and operation as the retaining ring 132 described above.
  • the shuttle valve 1034 may have substantially the same features as the shuttle valve 134 descripted above.
  • the body 1232 is elongated compared to the body 332 of the shuttle valve 134 depicted in FIG. 14 .
  • the pause valve assembly 1042 may include a retaining clip 1130 and not include a shuttle retainer 130 , 530 .
  • the retaining clip 1130 may permit a reduction in the size, including the diameter, of the lower valve body 1028 in which the clip 1130 is received.
  • the retaining clip 1130 may be annular in shape with an interior wall 1196 that defines an aperture and an exterior wall 1194 from which a plurality of spokes 1198 extend radially.
  • the retaining clip 1130 is a star washer. The retaining clip 1130 frictionally engages the inner wall of the lower valve body 1028 and retains the sealing member 1120 d in place within the shuttle valve 1034 .
  • the retaining clip 1130 may be received in the skirt cavity 1312 of the lower valve body 1028 such that the spokes 1198 of the clip 1130 are adjacent the inner skirt wall 1316 .
  • the retaining clip 1130 may be positioned proximate to the annular wall 1320 of the lower valve body 1028 and below the sealing member 1120 d positioned under the lower plate 1304 of the lower valve body 1028 .
  • the inner diameter of the retaining clip 1130 may be slightly larger than the outer diameter of the shuttle valve 1034 to permit the shuttle valve 1034 to travel axially within the aperture of the retaining clip 1130 .
  • Water may reach the sealing member 1120 d through both the inner diameter of the retaining clip 1130 and the fluid flow path 1195 between spokes 1198 and the inner diameter of the annular wall 1320 of the lower valve body 1028 and press the sealing member 1120 d against the shuttle valve 1034 and the lower plate 1304 more uniformly, thereby creating a faster or stronger seal against the shuttle valve 1034 than in the absence of water.
  • the base 1234 and a lower portion of the body 1232 of the shuttle valve 1034 may be received in the skirt cavity 1312 of the lower valve body 1028 instead of in the cavity 298 , 698 of the shuttle retainer 130 , 530 .
  • fluid flows into the handle 1000 during either irrigate mode or pause mode it flows into the skirt cavity 1312 of the lower valve body 1028 instead of the cavity 298 , 698 of the shuttle retainer 130 , 530 .
  • the shuttle valve 1034 may be blocked from advancing too far by contact between the top surface 1244 of the shuttle valve 1034 and the bottom surface 1182 of the floor 1172 of the head 1156 of upper valve body 1026 .
  • the poppet assembly is incorporated into the valve base to form an integrated valve base 1138 , which may help decrease handle 1000 manufacturing costs and/or assembly time by reducing the number of component parts.
  • Handles 1000 that include an integrated valve base 1138 have a similar design, construction, function, assembly, and operation as those described above with the following exceptions.
  • the integrated valve base 1138 is configured to selectively disconnect fluid flow from the hose 108 to the tip 104 .
  • the integrated valve base 1138 may include a poppet assembly 1136 connected to an elongated barbed tip 928 by stacked concentric upper and bottom discs 938 , 940 .
  • the poppet assembly 1136 may include a cap 912 , including a recessed center portion 913 , connected to a poppet support plate 916 by a poppet neck 918 .
  • An annular platform 914 may encircle the neck 918 above the poppet support plate 916 .
  • the cap 912 and annular platform 914 are generally sized and shaped to be received in the shuttle valve 1034 .
  • the poppet support plate 916 includes an upper surface 920 and a plurality of support features 924 extending outwardly from the platform 914 .
  • a flow path 926 may be defined between two adjacent but spatially separated support features 924 .
  • a sealing member 1120 e may be seated around the poppet neck 918 between the cap 912 and platform 914 .
  • the upper disc 938 may have a smaller diameter than the bottom disc 940 such that a first surface 937 of the bottom disc 940 is exposed and is available to interface with the skirt 1308 of the lower valve body 1028 .
  • a reinforced base 966 positioned between the bottom disc 940 and the barbed tip 928 may include a plurality of radially extending arms 967 for stability when seated against the bushing 1040 .
  • the barb aperture 1342 defined within the bushing 1040 is of larger diameter than the barbed tip 928 of the integrated valve base 1138 , allowing the hose to fit thereon.
  • the integrated valve base 1138 defines a flow cavity 930 from the barbed tip 928 through to the top surface 932 of the upper disc 938 .
  • the barbed tip 928 may include one or more gripping components 936 that enhance the connection between the integrated valve base 1138 and the hose 108 .
  • fluid can flow from the hose 108 through the flow cavity 930 in the integrated valve base 1138 , through the flow path 926 between support features 924 of the poppet support plate 916 , into the skirt cavity 1312 of the lower valve body 1028 , into the base cavity 1248 of the shuttle valve 1034 , and into the flow lumen 1242 of the shuttle valve 1034 .
  • the handle components of FIGS. 28-36 may be assembled within the housing 1002 similarly to how the handle 500 is assembled, except as described below.
  • the arms 1170 of the valve cap 1022 may be positioned adjacent to the third ledges 1054 a , 1054 b rather than under the third ledges 554 a , 554 b.
  • the lip 1180 of upper valve body 1026 may be positioned under the fourth ledge 1056 a , 1056 b rather than above the fourth ledge 556 a , 556 b .
  • the sealing member 1020 c may be positioned under the lip 1180 , adjacent to the base 1158 of the upper valve body 1026 , and above the lip 1306 of the lower valve body 1028 .
  • the upper plate 1302 of the lower valve body 1028 may be positioned above and adjacent the fifth ledge 1058 a , 1058 b.
  • the retaining clip 1130 may be positioned proximate to the annular wall 1320 of the lower valve body 1028 and below the sealing member 1120 d positioned under the lower plate 1304 of the lower valve body 1028 .
  • the barbed tip 928 of the integrated valve base 1138 is received in the barb aperture 1342 of the bushing 1040 .
  • the rim 1344 of the bushing 1040 may be positioned on top of the seventh ledges 1062 a , 1062 b.
  • the walls 1270 a on the rear face 1268 of the interior slider plate 1264 of the pause actuator 1012 may be positioned near the interface between the neck 1160 and base 1158 of the upper valve body 1026 when pause mode is selected and may be positioned near or adjacent the head 1156 when irrigate mode is selected.
  • the cap 912 , poppet neck 918 , and annular platform 914 of the poppet assembly 1136 and the sealing member 1120 e positioned around the poppet neck 918 may be received in the base cavity 1248 of the shuttle valve 1034 .
  • the first surface 920 of the poppet support plate 916 may be positioned below and adjacent to the bottom surface 1246 of the base 1234 of the shuttle valve 1034 .
  • the poppet support plate 916 and upper disc 938 of the integrated valve base 1138 are received in the skirt cavity 1312 of the lower valve body 1028 .
  • the outer diameter of the bottom disc 940 of the integrated valve base 1138 may be approximately the same as the outer diameter of the skirt 1308 of the lower valve body 1028 such that when the first surface 937 of the bottom disc 940 is positioned under the skirt 1308 , the outer skirt wall 1314 may be flush with an outer surface 941 of the bottom disc 940 .
  • the barbed tip 928 of the integrated valve base 1138 is received in the barb aperture 1342 of the bushing 1040 .
  • a rim 1344 of the bushing 1040 may rest on the seventh ledges 1062 a , 1062 b .
  • the bushing 1040 may freely rotate on the seventh ledges 1062 a , 1062 b to allow the integrated valve base 1138 and connected valve assembly to freely rotate or swivel within the handle 1000 .
  • a user may insert a tip 104 into, and eject a tip 104 from, the handle 100 of FIGS. 1-17 according to the following procedures. Insertion and ejection of a tip 104 from the handle 500 of FIGS. 18-27 and from the handle 1000 of FIGS. 28-36 follows a similar procedure. The procedures are substantially the same as those described in U.S. patent application Ser. No. 14/555,339, which is incorporated by reference in its entirety herein.
  • a tip 104 is inserted into the handle 100 by passing an end of the tip 104 opposite the tip outlet 105 through the tip-receiving aperture 210 of the handle collar 118 , through the tip receiving cavity 182 defined by the interior walls 174 a , 174 b of the first and second shells 114 , 116 , and into the tip-receiving aperture 474 of the latch body 452 .
  • the tip-receiving aperture 474 of the latch body 452 is partially offset from the tip cavity 222 of the valve cap 122 , which is positioned below the tip-receiving aperture 474 .
  • the tip 104 engages the latch body 452 and pushes the interior lip 470 of the latch body 452 laterally in the direction of the spring legs 454 until the tip-receiving aperture 474 of the latch body 452 and the tip cavity 222 of the valve cap 122 vertically align.
  • the spring legs 454 are compressed, and the feet 462 are positioned adjacent to the interior wall 174 a , 174 b of the first and second shells 114 , 116 .
  • the inserted end of the tip 104 can then proceed through the tip cavity 222 of the valve cap 122 , past the sealing member 120 b , and into the valve cavity 246 of the backflow valve body 124 or the valve cavity 662 of the upper valve body 526 .
  • a tip collar 106 on the tip 104 may be biased against the handle collar 118 when the tip 104 is fully inserted into the handle 100 .
  • the outer diameter of the inserted end of the tip 104 is slightly larger than the inner diameter of the sealing member 120 b , thereby creating a fluid-tight seal between the sealing member 120 b and the tip 104 .
  • the D-shape of the perimeter of the interior lip 470 of the latch body 452 which may be complimentary or keyed to the D-shape of the inserted end of the tip 104 , help to align the tip 104 in the handle 100 .
  • the tip 104 may be coupled to the latch 121 by capturing the interior lip 470 of the latch body 452 within an annular recess (not shown) of the tip 104 .
  • the handle collar 118 of the handle 100 is depressed toward the bodies 192 a , 192 b of the first and second shells 114 , 116 when the tip 104 is coupled with the latch 121 .
  • the arcuate tabs 212 of the handle collar 118 move along the necks 180 a , 180 b of the first and second shells 114 , 116 toward the bodies 192 a , 192 b , which decreases the height of the gap 214 , and the spring 216 is compressed.
  • the compressed spring 216 exerts an upward force, which will return the handle collar 118 back to its original position (i.e., separated from the bodies 192 a , 192 b by a gap 214 ) in the absence of another force opposing this upward force.
  • this upward force will be opposed by a flange (not shown) on the tip 104 that holds the handle collar 118 down, thereby maintaining the handle collar 118 in a position adjacent to the handle housing 102 .
  • An audible click or other similar noise may occur when the latch 121 captures the annular recess of the tip 104 , thereby providing an audible indication that the tip 104 is attached to the handle 100 .
  • the noise may be mechanically produced (for example, a click resulting from a portion of the tip 104 impacting a portion of the handle 100 , or a click resulting from a portion of the tip 104 springing outward or mechanically deforming).
  • a user slides the exterior slider portion 196 of the tip eject button 110 upward toward the handle collar 118 of the handle 100 , and maintains the exterior slider portion 196 in that position while inserting a tip 104 into the handle 100 as described above.
  • Sliding the exterior slider portion 196 upward along the longitudinal axis of the handle housing also slides the interior slider portion 200 upwards via the connection between the exterior and interior slider portions 196 , 200 at the neck 202 .
  • the nose 201 of the interior slider portion 200 slides upward along the chamfered wall 478 of the latch body 452 , the nose 201 forces the latch 121 to move laterally in the direction of the spring legs 454 .
  • the tip-receiving aperture 474 of the latch body 452 is thus aligned over the tip cavity 222 of the valve cap 122 before the tip 104 is inserted.
  • the inserted tip 104 can then proceed into the valve cavity 246 of the backflow valve body 124 or the valve cavity 662 of the upper valve body 526 as described above.
  • a user ejects a tip 104 by sliding the exterior slider portion 196 of the tip eject button 110 upward toward the handle collar 118 .
  • the nose 201 of the interior slider portion 200 slides upward along the chamfered wall 478 of the latch body 452 , the nose 201 forces the latch 121 to move laterally in the direction of the spring legs 454 .
  • the latch 121 moves substantially normal or perpendicular to the movement of the tip eject button 110 .
  • the interior lip 470 disengages from the annular recess in the tip 104 and the tip 104 is decoupled.
  • the spring force of the spring 216 on the handle collar 118 helps to eject the tip 104 by forcing the handle collar 118 upward against the flange of the tip 104 .
  • the force opposing the upward force exerted by the spring 216 is removed, thereby allowing the spring 216 to move the handle collar 118 back to its original position.
  • This movement of the handle collar 118 from a position adjacent to the bodies 192 a , 192 b to its original position provides a visual indication that the tip 104 has been decoupled from the latch 121 .
  • a user may use the handle 100 of FIGS. 1-17 , the handle 500 of FIGS. 18-27 , or the handle 1000 of FIGS. 28-36 and the oral irrigator to which it is fluidically connected for oral irrigation and/or cleaning of the teeth, gums, and tongue according to the following procedure.
  • a tip 104 is connected to the handle 100 as described above, and the handle 100 is fluidically connected to a fluid source, such as a reservoir of an oral irrigator, and power is supplied to the oral irrigator, the handle 100 is ready to use. Fluid flows through the hose 108 into the flow cavity 430 in the valve base 138 and into the cavity 298 of the shuttle retainer 130 .
  • a fluid source such as a reservoir of an oral irrigator
  • irrigate mode fluid flows to the tip 104 as described above when the pause valve assembly 142 is placed in an open position as follows (see FIG. 5B ).
  • the shuttle valve 134 which is operably connected to the pause actuator 112 via the retaining ring 132 , is moved into the shuttle compartment 284 of the upper valve body 126 .
  • the top surface 344 of the body 332 of the shuttle valve 134 approaches or contacts the bottom surface 282 of the floor 272 of the head 256 of upper valve body 126 .
  • a flow gap 350 is simultaneously created between the bottom surface 346 of the base 334 of the shuttle valve 134 and the first surface 320 of the poppet support plate 316 of the poppet assembly 136 .
  • the cap 312 , poppet neck 318 , and sealing member 120 e of the poppet assembly 136 are positioned below, not seated inside, the base cavity 348 of the shuttle valve 134 .
  • Fluid can flow from the hose 108 through the flow cavity 430 in the valve base 138 , through the flow path 326 between the sprockets 324 of the poppet support plate 316 , into the cavity 298 of the shuttle retainer 130 , into the base cavity 348 of the shuttle valve 134 , and into the flow lumen 342 of the shuttle valve 134 .
  • the pause valve assembly 142 To initiate pause mode without turning off power to the oral irrigator to which the handle 100 is connected, the pause valve assembly 142 must be moved to a closed position as follows (see FIGS. 4 and 5A ). A user manually slides the pause actuator 112 downward relative to the housing 102 , such as by grasping the grip portion 366 and moving it away from the handle collar 118 (i.e., in the down or off position) and substantially along a longitudinal axis of the housing 102 . This translational movement of the pause actuator 112 also slides the coupled retaining ring 132 downward, which in turn slides the operably connected shuttle valve 134 downward.
  • the base 334 of the shuttle valve 134 contacts and seals against the first surface 320 of the poppet support plate 316 such that the cap 312 , poppet neck 318 , and sealing member 120 e are received inside the base cavity 348 of the shuttle valve 134 .
  • the sealing member 120 e helps provide a seal with the base cavity 348 and fluid is partially or completely prevented from entering the base cavity 348 .
  • Fluid can flow from the hose 108 through the valve base 138 through the flow path 326 of the poppet support plate 316 and into the cavity 298 of the shuttle retainer 130 . But fluid cannot pass into the flow lumen 342 of the shuttle valve 134 . Fluid flow is thereby paused or stopped through the shuttle valve 134 to the tip 104 .
  • the pause mode is implemented by mechanical, not electrical, operation of the pause actuator 112 .
  • a mechanically actuated pause mode avoids the need for electrical circuitry in the handle 100 , which thereby helps improve the safety of the handle 100 and the oral irrigator to which the handle is fluidically connected because electrical circuits are not in close physical proximity to fluid conduits.
  • a mechanically-controlled instead of an electrically-controlled pause mode also decreases the manufacturing cost of the handle 100 and the oral irrigator. No separate battery is required in the handle 100 to power such circuits. Alternatively, the handle 100 need not be electrically wired to the oral irrigator. Thus, an easily accessible and selectable pause mode is provided to the user with significantly less manufacturing cost and greater safety.
  • the hose 108 can rotate freely relative to the handle 100 to remain free from tangles, bends, or kinks while maintaining a desired handle 100 orientation.
  • the hose 108 can rotate at its connection to the handle 100 as components of the handle 100 rotate within and relative to the housing 102 .
  • valve base 138 may be ultrasonically welded to the skirt 408 of the lower valve body 128 such that rotation of the hose 108 attached to the barbed tip 428 of the valve base 138 rotates the valve base 138 , poppet assembly 136 , shuttle valve 134 , retaining ring 132 , and lower valve body 128 within and relative to the housing 102 .
  • the materials of some or all of the bushing 140 , valve base 138 , shuttle valve 134 , retaining ring 132 , and lower valve body 128 are selected to be low-friction so as to introduce minimal to no drag.
US15/844,262 2016-12-15 2017-12-15 Pause valve and swivel assemblies for oral irrigator handle Active 2038-10-08 US10779922B2 (en)

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US201662435054P 2016-12-15 2016-12-15
US15/844,262 US10779922B2 (en) 2016-12-15 2017-12-15 Pause valve and swivel assemblies for oral irrigator handle

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US20180168785A1 US20180168785A1 (en) 2018-06-21
US10779922B2 true US10779922B2 (en) 2020-09-22

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US (1) US10779922B2 (fr)
EP (1) EP3554420B1 (fr)
CN (2) CN110267623B (fr)
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USD918381S1 (en) * 2019-06-11 2021-05-04 Willo 32 Sas Base
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